TWI656697B - Antenna structure and wireless communication device with same - Google Patents

Abstract

An antenna structure includes a housing, a feeding portion, a grounding portion, a first radiator and a second radiator, wherein the housing is provided with a first radiating portion and a second radiating portion, the first radiating body and the The second radiator is disposed in the casing. When the current is fed from the feeding portion, the current flows through the first radiating portion, and is grounded by the ground portion to excite the first working mode, and the current is The second operating mode is excited by the first radiating portion coupled to the first radiating body, and the second radiating body excites the third working mode when a current is fed from the second radiator At the same time, the current is also coupled to the second radiating portion by the second radiator, thereby causing the second radiating portion to excite the fourth operating mode.

Description

Antenna structure and wireless communication device having the same

The invention relates to an antenna structure and a wireless communication device having the same.

With the advancement of wireless communication technology, electronic devices such as mobile phones and personal digital assistants are constantly moving toward the trend of diversification, thinning, and faster and more efficient data transmission. However, the space for accommodating the antenna is also getting smaller and smaller, and with the continuous development of Long Term Evolution (LTE) technology, the bandwidth of the antenna is increasing. Therefore, how to design an antenna with a wider bandwidth in a limited space is an important issue in antenna design.

In view of the above, it is necessary to provide an antenna structure and a wireless communication device having the same.

An antenna structure includes a housing, a feeding portion, a grounding portion, a first radiator and a second radiator, wherein the housing is provided with a first radiating portion and a second radiating portion spaced apart from the first radiating portion The feeding portion is electrically connected to the first radiating portion for feeding a current signal to the first radiating portion, and the ground portion is electrically connected to the first radiating portion for the first radiating portion Providing a grounding, the first radiator and the second radiator are disposed in the casing, and when a current is fed from the feeding portion, the current flows through the first radiating portion, and The grounding portion is grounded to excite the first operating mode to generate a radiation signal of the first radiation frequency band. When the current is fed from the feeding portion, the current is coupled to the first radiation portion by the first radiation portion. a first radiator, wherein the first radiator excites a second operating mode to generate a radiation signal of a second radiation band, and when the current is fed from the second radiator, the second radiator is excited Three working modes to generate the third radiating band a signal, when the current is fed from the second radiator, the current is also coupled to the second radiating portion by the second radiator, so that the second radiating portion excites the fourth working mode To generate a radiation signal of the fourth radiation band.

A wireless communication device comprising the antenna structure described above.

The antenna structure and the wireless communication device having the antenna structure are effective because the first radiation portion and the second radiation portion are disposed on the casing, and the corresponding first radiator and the second radiator are disposed in the casing. Achieve broadband design.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without the creative work are all within the scope of the present invention.

It should be noted that when an element is referred to as being "electrically connected" to another element, it can be directly on the other element or the element can be present. When an element is considered to be "electrically connected" to another element, it can be a contact connection, for example, a wire connection or a non-contact connection, for example, a non-contact coupling.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art. The terminology used in the description of the invention herein is for the purpose of describing the particular embodiments. The term "and/or" used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict.

Referring to FIG. 1, a preferred embodiment of the present invention provides an antenna structure 100 that can be applied to a wireless communication device 200 such as a mobile phone or a personal digital assistant to transmit and receive radio waves to transmit and exchange wireless signals.

The wireless communication device 200 further includes a first substrate 21 and a second substrate 23. Both the first substrate 21 and the second substrate 23 can be made of a dielectric material such as epoxy glass fiber (FR4). The first substrate 21 is provided with a first feeding point 211 and a first grounding point 213. The first feeding point 211 is spaced apart from the first grounding point 213 for respectively feeding current to the antenna structure 100 and providing grounding. The second substrate 23 is spaced apart from the first substrate 21 . A second feeding point 231 and a second grounding point 233 are disposed on the second substrate 23 . The second feeding point 231 is spaced apart from the second grounding point 233 for respectively feeding current to the antenna structure 100 and providing grounding.

In the embodiment, the wireless communication device 200 further includes at least four electronic components, namely, a first electronic component 24, a second electronic component 25, a third electronic component 26, and a fourth electronic component 27. The first electronic component 24 is a speaker module disposed between the first substrate 21 and the second substrate 23 and disposed adjacent to the first grounding point 213. The second electronic component 25 is a vibration motor disposed on a side of the second substrate 23 facing away from the first substrate 21 and disposed adjacent to the second feed point 231 . The third electronic component 26 and the fourth electronic component 27 are spaced apart from each other on the second substrate 23 and located between the first electronic component 24 and the second electronic component 25 . The third electronic component 26 is a Universal Serial Bus (USB) interface module disposed adjacent to the first electronic component 24. The fourth electronic component 27 is a microphone module disposed adjacent to the second grounding point 233.

Referring to FIG. 2 , the antenna structure 100 includes at least a housing 11 , a feeding portion 12 , a grounding portion 14 , a first radiator 16 , and a second radiator 17 .

The housing 11 can be an outer casing of the wireless communication device 200. The housing 11 includes at least a bezel 112. In this embodiment, the frame 112 is made of a metal material. The bezel 112 has a substantially annular structure. The housing 11 may also include a backing plate (not shown). The back cover is disposed on the frame 112 and defines a receiving space 114 together with the frame 112. The accommodating space 114 is configured to receive electronic components or circuit modules of the first substrate 21, the second substrate 23, and the processing unit of the wireless communication device 200.

The frame 112 includes at least a tip portion 115, a first side portion 116, and a second side portion 117. In the embodiment, the end portion 115 is the bottom end of the wireless communication device 200. The first side portion 116 is disposed opposite to the second side portion 117, and is disposed at two ends of the end portion 115, preferably vertically.

A break point 118 and a slit 119 are defined in the frame 112. In the embodiment, the break point 118 is opened at a position where the first side portion 116 is close to the end portion 115. The slit 119 is opened at a position where the end portion 115 is close to the second side portion 117. The break point 118 and the slit 119 both penetrate and block the frame 112. The break point 118 and the slit 119 collectively divide the frame 112 into a first radiating portion E1 and a second radiating portion E2 which are spaced apart from each other. The frame 112 between the break point 118 and the slit 119 forms the first radiating portion E1. The frame 119 is away from the first radiation portion E1 and the frame 112 on the side of the break point 118 to form the second radiation portion E2. In this embodiment, the second radiating portion E2 is grounded.

It can be understood that the first radiation portion E1 is further provided with an opening 121. The opening 121 corresponds to the third electronic component 26 such that the third electronic component 26 is partially exposed from the opening 121. In this way, the user can insert a USB device through the opening 121 to establish an electrical connection with the third electronic component 26.

It can be understood that, in this embodiment, the break point 118 and the slit 119 are filled with an insulating material (for example, plastic, rubber, glass, wood, ceramic, etc., but not limited thereto).

In the embodiment, the feeding portion 12 is disposed inside the casing 11 and located between the first electronic component 24 and the first side portion 116. One end of the feeding portion 12 is electrically connected to a position where the first radiating portion E1 is close to the break point 118, and the other end is electrically connected to the first feeding point 211 by a matching circuit 13, and further The first radiating portion E1 feeds a current signal. The matching circuit 13 can be a capacitor, an inductor or a combination thereof for adjusting the impedance matching of the first radiating portion E1.

The grounding portion 14 is disposed inside the casing 11 . One end of the grounding portion 14 is electrically connected to one end of the first radiating portion E1 near the slit 119, and the other end is electrically connected to the second grounding point 233 for providing grounding for the first radiating portion E1.

The first radiator 16 is an inner radiator disposed in the casing 11 . The first radiator 16 is disposed in the space surrounded by the end portion 115, the first side portion 116, the first substrate 21, and the first electronic component 24, and is spaced apart from the end portion 115. The first radiator 16 includes a grounding section 161, a first radiating section 163, a second radiating section 165, and a third radiating section 167 which are sequentially connected. The grounding segment 161 is substantially straight and disposed between the first electronic component 24 and the feeding portion 12 . One end of the grounding segment 161 is electrically connected to the first grounding point 213, and the other end extends in a direction parallel to the first side portion 116 and adjacent to the end portion 115.

The first radiating section 163, the second radiating section 165, and the third radiating section 167 are disposed between the first electronic component 24 and the tip end portion 115. The first radiating section 163 is substantially straight and vertically connected to an end of the grounding section 161 away from the first grounding point 213, and is parallel to the end portion 115 and adjacent to the second side portion. The direction of 117 extends. The second radiating section 165 is substantially straight. The second radiating section 165 is vertically connected to an end of the first radiating section 163 away from the grounding section 161 and extends in a direction parallel to the grounding section 161 and adjacent to the end portion 115. The third radiant section 167 is substantially straight. One end of the third radiating section 167 is perpendicularly connected to the end of the second radiating section 165 away from the first radiating section 163, and is parallel to the first radiating section 163 and close to the first side 116. The direction extends.

In this embodiment, the first radiating section 163 and the third radiating section 167 are respectively disposed at two ends of the second radiating section 165, and further form a substantially U-shaped structure with the second radiating section 165. The length of the first radiating section 163 is greater than the length of the third radiating section 167, and the length of the third radiating section 167 is greater than the length of the second radiating section 165.

The second radiator 17 is an inner radiator disposed in the casing 11 . The second radiator 17 is integrally disposed in a space surrounded by the distal end portion 115, the second side portion 117, and the second electronic component 25, and is spaced apart from the distal end portion 115. The second radiator 17 includes a feeding section 171, a first connecting section 173, a second connecting section 175 and a third connecting section 177 which are sequentially connected. In the embodiment, the feeding section 171 is substantially straight, and one end thereof is electrically connected to the second feeding point 231 by the matching unit 18 to feed the current signal to the second radiator 17. The other end of the feed section 171 extends in a direction parallel to the second side portion 117 and adjacent to the end portion 115. In this embodiment, the matching unit 18 can be a capacitor, an inductor or a combination thereof for adjusting the impedance matching of the second radiator 17 .

The first connecting section 173 is substantially straight. One end of the second connecting section 173 is perpendicularly connected to the end of the feeding section 171 away from the second feeding point 231, and is parallel to the end portion 115 and close to the second side portion 117. extend. One end of the second connecting section 175 is perpendicularly connected to the end of the first connecting section 173 away from the feeding section 171, and is parallel to the feeding section 171 and close to the second electronic component 25 (ie It extends away from the direction of the end portion 115). The third connecting section 177 is substantially straight, and one end thereof is perpendicularly connected to the end of the second connecting section 175 away from the first connecting section 173, and is parallel to the first connecting section 173 and close to the The direction of the feed-in section 171 extends.

In this embodiment, the first connecting section 173 and the third connecting section 177 are respectively disposed at two ends of the second connecting section 175, and further form a substantially U-shaped with the second connecting section 175. structure. The length of the first connecting section 173 is greater than the length of the third connecting section 177, and the length of the third connecting section 177 is greater than the length of the second connecting section 175.

It can be understood that, referring to FIG. 3, when a current is fed from the feeding portion 12, a current will flow through the first radiating portion E1 and flow to the slit 119, and then through the ground portion 14 and The second ground point 232 is grounded (refer to path P1). In this way, the feeding portion 12, the first radiating portion E1 and the grounding portion 14 together form a loop antenna, thereby exciting the first operating mode to generate a radiation signal of the first radiating band. In addition, when a current is fed from the feeding portion 12, the current will flow through the first radiating portion E1, and coupled to the first radiator 16 by the first radiating portion E1, and then borrowed Grounded by the first grounding point 213. As such, the first radiator 16 is coupled to the first radiating portion E1, and causes the first radiator 16 to excite the second operating mode to generate a radiation signal of the second radiating band.

When a current is fed from the second feed point 231, a current will flow through the second radiator 17, so that the second feed point 231 and the second radiator 17 together form a monopole antenna. And inducing a third operating mode to generate a radiation signal in the third radiation band. In addition, when a current is fed from the second feed point 231, a current will flow through the second radiator 17 and be coupled to the second radiator E2 by the second radiator 17. As such, the second radiating portion E2 is coupled to the second radiator 17 and causes the second radiator 17 to excite the fourth operating mode to generate a radiation signal of the fourth radiation band.

In this embodiment, the first working mode is an LTE-A low frequency mode. The second working mode is an LTE Band 21 modality. The third resonant mode is an LTE-A high frequency mode. The fourth resonant mode is an LTE-A intermediate frequency mode. The frequency of the second radiation band is higher than the frequency of the first radiation band. The frequency of the third radiation band is higher than the frequency of the fourth radiation band. The frequency of the fourth radiation band is higher than the frequency of the second radiation band. In this embodiment, the frequency of the first radiation frequency band is 703-960 MHz. The frequency of the second radiation band is 1400-1700 MHz. The frequency of the third radiation band is 2300-2700 MHz. The frequency of the fourth radiation band is 1700-2200 MHz.

It can be understood that in other embodiments, the antenna structure 100 further includes a switching circuit 19. One end of the switching circuit 19 is electrically connected to the ground portion 14 to be electrically connected to the first radiating portion E1 by the ground portion 14. The other end is electrically connected to the second grounding point 231, that is, grounded, thereby effectively adjusting the first frequency band, that is, the low frequency band of the antenna structure 100.

Referring to FIG. 4 , in the embodiment, the switching circuit 19 includes a switch 191 and at least one switching component 193 . The switch 191 is electrically connected to the ground portion 14 to be electrically connected to the first radiating portion E1 by the ground portion 14. The switching element 193 can be an inductor, a capacitor, or a combination of an inductor and a capacitor. The switching elements 193 are connected in parallel with each other, and one end thereof is electrically connected to the switching switch 191, and the other end is electrically connected to the second grounding point 231, that is, grounded. Thus, by controlling the switching of the changeover switch 191, the first radiating portion E1 can be switched to a different switching element 193. Since each switching element 193 has a different impedance, the low frequency of the antenna structure 100, that is, the first frequency band, can be effectively adjusted by the switching of the switching switch 191.

FIG. 5 is a graph of S parameters (scattering parameters) when the antenna structure 100 operates in a first radiant frequency band and a second radiant frequency band (ie, operating in the LTE-A low frequency band and the LTE Band 21 band). FIG. 6 is a graph showing the efficiency of the antenna structure 100 when operating in the first radiant frequency band and the second radiant frequency band (ie, operating in the LTE-A low frequency band and the LTE Band 21 band). The curve S61 is a radiation efficiency when the antenna structure 100 operates in the first radiation band and the second radiation band (ie, operates in the LTE-A low frequency band and the LTE Band 21 band). The curve S62 is the total radiation efficiency when the antenna structure 100 operates in the first radiant frequency band and the second radiant frequency band (ie, operating in the LTE-A low frequency band and the LTE Band 21 band). The antenna structure 100 has an efficiency of 30% when operating in a low frequency band and 38% when operating in the LTE Band 21 frequency band.

FIG. 7 is a graph of S parameters (scattering parameters) when the antenna structure 100 operates in the third radiation band and the fourth radiation band (ie, the LTE-A medium and high frequency bands). FIG. 8 is a graph showing the efficiency of the antenna structure 100 when operating in the third radiant frequency band and the fourth radiant frequency band (ie, the LTE-A medium high frequency band). The curve S81 is the radiation efficiency when the antenna structure 100 operates in the third radiation band and the fourth radiation band (ie, the LTE-A medium and high frequency bands). The curve S82 is the total radiation efficiency when the antenna structure 100 operates in the third radiation band and the fourth radiation band (ie, the high frequency band in the LTE-A). The efficiency of the antenna structure 100 when operating in the LTE-A mid-band is 50%, and the efficiency when operating in the LTE-A high-band is 40%.

Obviously, as can be seen from FIG. 5 to FIG. 8 , the antenna structure 100 can operate at frequencies ranging from 703-960 MHz, 1400-1700 MHz, and 1710-2690 MHz, that is, to the LTE-A low, medium, and high frequency bands, and The LTE Band 21 frequency band has a wide frequency range, and when the antenna structure 100 operates in the above frequency band, its operating frequency can meet the antenna working design requirements and has better radiation efficiency.

It can be understood that, in other embodiments, the positions of the feeding portion 12 and the ground portion 14 are interchangeable, such that the first feeding point 211 on the first substrate 21 and the second connection on the second substrate 23 The location of location 233 is interchangeable. That is, one end of the feeding portion 12 is electrically connected to the first feeding point 211 disposed on the second substrate 23 by the matching circuit 13, and the other end is electrically connected to the first radiation portion E1. One end of the slit 119. One end of the grounding portion 14 is electrically connected to the second grounding point 233 disposed on the first substrate 21 by the switching circuit 19, and the other end is electrically connected to the first radiating portion E1 near the The end of breakpoint 118.

As described in the foregoing embodiment, the antenna structure 100 defines the first radiation portion E1 and the second radiation portion E2 from the frame 112 by providing the break point 118 and the slit 119. The antenna structure 100 is further provided with a feeding portion 12, a grounding portion 14, and a second radiator 17. The current of the feeding portion 12 is fed to the first radiating portion E1, and grounded by the grounding portion 14 to excite the first operating mode to generate a radiation signal of the LTE-A low frequency band. The second radiator 17 is also fed with a current signal and grounded to excite the third operating mode to generate a radiation signal of the LTE-A high frequency band. In addition, the current of the second radiator 17 is also coupled to the second radiating portion E2, so that the second radiating portion E2 generates a radiation signal of the LTE-A mid-band. Therefore, the wireless communication device 200 can simultaneously receive or transmit wireless signals in a plurality of different frequency bands to increase the transmission bandwidth by using Carrier Aggregation (CA) technology of LTE-Advanced.

Moreover, in the embodiment, the first radiator 16 is disposed due to the antenna structure 100. As such, the current flowing through the first radiating portion E1 will be coupled to the first radiator 16, thereby allowing the first radiator 16 to operate in the LTE Band 21 band. That is, the antenna structure 100 of the present invention can be completely applied to the GSM Qual-band, UMTS Band I/II/V/VIII and LTE 700/850/900/1800/1900/2100/2300/2500 bands, and has both 3CA functions and Meet the LTE Band21 antenna characteristics.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100‧‧‧Antenna structure

11‧‧‧Shell

112‧‧‧Border

114‧‧‧ accommodating space

115‧‧‧End

116‧‧‧First side

117‧‧‧ second side

118‧‧‧ Breakpoints

119‧‧‧ gap

121‧‧‧ openings

E1‧‧‧First Radiation Department

E2‧‧‧Second Radiation Department

12‧‧‧Feeding Department

13‧‧‧Matching circuit

14‧‧‧ Grounding Department

16‧‧‧First radiator

161‧‧‧ Grounding section

163‧‧‧First radiant section

165‧‧‧second radiant section

167‧‧‧The third radiant section

17‧‧‧Second radiator

171‧‧‧Feeding section

173‧‧‧First connection segment

175‧‧‧Second connection

177‧‧‧ third connection

18‧‧‧Matching unit

19‧‧‧Switching circuit

191‧‧‧Toggle switch

193‧‧‧Switching components

200‧‧‧Wireless communication device

21‧‧‧First substrate

211‧‧‧ first feed point

213‧‧‧First grounding point

23‧‧‧second substrate

231‧‧‧second feed point

233‧‧‧Second grounding point

24‧‧‧First electronic components

25‧‧‧Second electronic components

26‧‧‧ Third electronic component

27‧‧‧Fourth electronic components

1 is a schematic diagram of an antenna structure applied to a wireless communication device according to a preferred embodiment of the present invention. 2 is a circuit diagram of the antenna structure shown in FIG. 1. FIG. 3 is a schematic diagram of current flow of the antenna structure shown in FIG. 2. FIG. 4 is a circuit diagram of a switching circuit in the antenna structure shown in FIG. 1. FIG. 5 is a graph of S parameters (scattering parameters) when the antenna structure shown in FIG. 1 operates in a first radiation band and a second radiation band. FIG. 6 is a graph showing the efficiency of the antenna structure shown in FIG. 1 when operating in the first radiation band and the second radiation band. FIG. 7 is a graph of S parameters (scattering parameters) when the antenna structure shown in FIG. 1 operates in the third radiation band and the fourth radiation band. FIG. 8 is a graph showing the efficiency of the antenna structure shown in FIG. 1 when operating in the third radiation band and the fourth radiation band.

no

Claims (10)

An antenna structure is improved in that the antenna structure includes a housing, a feeding portion, a grounding portion, a first radiator and a second radiator, and the housing is provided with a first radiating portion and the first radiation a second radiating portion disposed at an interval, wherein the feeding portion is electrically connected to the first radiating portion for feeding a current signal to the first radiating portion, and the ground portion is electrically connected to the first radiating portion Providing grounding for the first radiating portion, the first radiator and the second radiator are disposed in the casing, and the current flows through the current after the current is fed from the feeding portion a first radiating portion, and grounded by the grounding portion, thereby exciting a first operating mode to generate a radiation signal of a first radiation frequency band, wherein when the current is fed from the feeding portion, the current is further The first radiating portion is coupled to the first radiating body, such that the first radiating body excites the second operating mode to generate a radiation signal of the second radiating band, when the current is fed from the second radiator, The second radiator excites the third working mode Generating a radiation signal of a third radiation band, wherein when the current is fed from the second radiator, the current is also coupled to the second radiation portion by the second radiator, thereby causing the second The radiating portion excites the fourth operating mode to generate a radiation signal of the fourth radiating band. The antenna structure of claim 1, wherein the frequency of the second radiation frequency band is higher than the frequency of the first radiation frequency band, and the frequency of the third radiation frequency band is higher than the frequency of the fourth radiation frequency band. The frequency of the fourth radiation band is higher than the frequency of the second radiation band. The antenna structure of claim 2, wherein the first working mode is an LTE-A low frequency mode, the second working mode is an LTE Band 21 mode, and the third working mode is The LTE-A high frequency mode, the fourth working mode is an LTE-A intermediate frequency mode. The antenna structure of claim 1, wherein the housing comprises at least a bezel, the bezel comprising at least a distal end portion, a first side portion and a second side portion, the first side portion and the first side portion The two side portions are respectively connected to the two ends of the end portion, and the casing is provided with a break point and a slit, and the break point and the gap both penetrate and block the casing, the break point and the gap Decomposing the first radiating portion and the second radiating portion from the housing, the frame between the break point and the slit forming the first radiating portion, the gap being away from the The first radiating portion and the frame on the side of the breakpoint form the second radiating portion. The antenna structure of claim 4, wherein the first radiator comprises a grounding segment, a first radiating segment, a second radiating segment and a third radiating segment, wherein one end of the grounding segment is grounded. The other end extends in a direction parallel to the first side portion and adjacent to the end portion, the first radiating portion is vertically connected to an end portion of the grounding portion, and is parallel to the end portion and adjacent to the second portion Extending in a direction of a side portion, the second radiating section is perpendicularly connected to an end of the first radiating section away from the grounding section, and extends in a direction parallel to the grounding section and adjacent to the end portion, the first One end of the three radiant section is vertically connected to the end of the second radiant section away from the first radiant section and extends in a direction parallel to the first radiant section and adjacent to the first side section. The antenna structure of claim 4, wherein the second radiator comprises a feeding section, a first connecting section, a second connecting section and a third connecting section which are sequentially connected, and the feeding section is electrically terminated Connected to a feed point for feeding a current signal to the second radiator, the other end extending in a direction parallel to the second side portion and adjacent to the end portion, the second connection portion being vertically connected to the Feeding the end of the segment and extending in a direction parallel to the end portion and adjacent to the second side portion, one end of the second connecting portion being vertically connected to the first connecting portion away from the feeding portion An end portion extending in a direction parallel to the feeding portion and away from the end portion, wherein one end of the third connecting portion is vertically connected to an end portion of the second connecting portion away from the first connecting portion, and along Parallel to the first connecting section and extending in a direction close to the feeding section. The antenna structure of claim 4, wherein the breakpoint and the gap are filled with an insulating material. The antenna structure of claim 1, wherein the wireless communication device uses a carrier aggregation technique and uses the first radiating portion, the second radiating portion, and the second radiator to simultaneously receive in a plurality of different frequency bands. Or send a wireless signal. A wireless communication device comprising the antenna structure of any one of claims 1-8. The wireless communication device of claim 9, wherein the wireless communication device further comprises a first substrate, a second substrate, a speaker module, a vibration motor, and a universal serial bus (USB) interface module. And the microphone module, the first substrate and the second substrate are disposed in the housing, the speaker module is disposed between the first substrate and the second substrate, and the vibration motor is disposed on the The second substrate is disposed on the side of the first substrate, and the USB interface module and the microphone module are disposed on the second substrate. The first radiator is disposed on the first substrate and the speaker module. And in the space enclosed by the casing, the second radiator is disposed in a space surrounded by the casing, the vibration motor and the microphone module.